Hinge



(No Model.)

H. S. HART.

HINGE.

Patented Apr. 19, 1892.

Noi 473,175.

milkin /22M f5 3% 46% UNITED STATES 'YATENT FFICE.

HOWARD S. HART, OF NEW BRITAIN, CONNECTICUT.

HINGE.

SPECIFICATION forming part of Tetters Patent No. 473,175, dated April 19,1892.

Application filed February 1, 1892. Serial No. 420,007 (No model.)

To all whom, it may concern.-

Be it known that I, HOWARD S. HART, a citizen of the United States, residing at New Britain, in the county of Hartford and State of Connecticut, have invented certain new and useful Improvements in Hinges, of which the following is a specification.

My invention relates to improvements in sheet-metal hinges; and the objects of my improvement are to form a pair of leaves and joint of two pieces of sheet metal without a separate pintle and to produce a hinge of peculiar construction and advantages.

I11 the accompanying drawings, Figure 1 is a front elevation of a pair of my hinge-leaves when opened, the lower end thereof being shown in vertical section. Fig. 2 is a horizontal section of the same on line m 00 of Fig. 1, and Fig. 3 is a plan view of a blank for the right hand one of said leaves.

I first cut out leaf-blanks from sheet metal in the form shown in Fig. 3, in which the several parts are so Well defined that the same reference-letters may be used to designate the different parts of the blank and the corresponding parts of the complete hinge. Ordinary screw-holes a. may be formed in any ordinary manner in the body I) of the leaves C D. The wings or pivotal lugs g h are bent on transverse lines, as indicated at 'm in Fig. 3, and a lesser bend is made on a longitudinal line at the junction of the leafbody I) and back 'n, as indicated by the line 0 in Fig. 3, the lugs before described being bent from the ends of the back. I prefer to cut out the middle portion of the back to form a recessed edge, as shownrbut said edge may be left straight from end to end, if desired. The blank for the leaf D is of the same form as that of the leaf C, excepting that the pivotal lugs may be formed a little longer and the slits or nicks r are omitted. The distance from outside to outside of the lugs g on the leaf C when bent up, as shown, is about the same as the distance between the inner sides of the lugs 71. on the leaf D, whereby the lugs of the leaf C may be placed inside of the lugs of the leaf D, as shown in Fig. 1. The transverse bends at the junction of the back and lugs of the leaf D are substantially in the same plane as the upper and lower edges of said leaf, whereas by making the slits or nicks r in the leaf C the transverse bends of its lugs are the thickness of said lugs above and below the lower and upper edges, respectively, of said leaf, and thus the leaf-body is the same length in both leaves, although the pivotal lugs are farther apart in one leaf than in the other. It is of course evident that the slits or nicks might be dispensed with by merely making the leaf C shorter at both ends, although the hinge thus produced would be less symmetrical.

In the lugs h of the leaf D, I form pintlesockets s, and -in the lugs of the leaf C, I form pintle-bosses u by swaging or striking up the metal of said lugs, leaving the reverse side of the pintle sockets projecting outwardly at each end of the hinge. The sickets and bosses might, however, be swaged in the opposite direction, the sockets being formed on the inner lugs and the pintle-bosses on the outer lugs. Such an inversion of the lugs, sockets, and pintle-bosses is objectionable on account of producing a hinge of less pleasing appearance. I prefer to swage each pintle-boss and its socket simultaneously, operating upon both thicknesses of the metal at once; but the particular method of making the article in this respect is not material to my hinge.

By my improvement the hinge is formed complete from only two pieces of sheetnietal and is produced at a small cost. The hinge is strong, durable, and efficient, while there is an open space between the pivotal lugs, which may be utilized to receive a spring in case a spring-hinge is desired. The inner lugs of the hinge-joint engage the back at of the hinge-leaf having the outerlugs and form a stop to limit the outward movement of the two hinge-leaves, as shown in Fig. 2.

I claim as my invention 1-. A sheet-metal hinge in which theleaves are provided with integral pivotal lugs having pintlesockets and bosses swaged or struck up to form the hinge-joint, substantially as described.

2. Ahinge the leaves of which consist of the leaf-body, the back bent at an angle to said body and the pivotal lugs bent from the ends of said back, substantially as described, and for the purpose specified.

HOWARD S. HART.

Witnessses:

JAMES SHEPARD, A. G. BEACH. 

